The CD11b-integrin (ITGAM) and systemic lupus erythematosus.

Abstract:

:Variations at the ITGAM gene, which encodes for the CD11b chain of the Mac-1 (alphaMbeta2; CD11b/CD18; complement receptor-3) integrin, is one of the strongest genetic risk factors for systemic lupus erythematosus (SLE). More specifically, a genetic variant (rs1143679) which results in an arginine to histidine substitution at position 77 in the extracellular portion of the integrin is associated with disease. It has recently been shown that this amino acid substitution results in a dysfunctional integrin, which is deficient in mediating cell adhesion to integrin ligands, phagocytosis and in addition cannot restrict inflammatory cytokine production in macrophages. In this review, we discuss immunological functions of the Mac-1 integrin and how defects in the genetic variant of Mac-1 may relate to SLE development.

journal_name

Lupus

journal_title

Lupus

authors

Fagerholm SC,MacPherson M,James MJ,Sevier-Guy C,Lau CS

doi

10.1177/0961203313491851

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

657-63

issue

7

eissn

0961-2033

issn

1477-0962

pii

22/7/657

journal_volume

22

pub_type

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